(March 2025)
(FY 2024/25)
(FY 2024/25)
Monthly installations
The chart below shows every MCS-certified domestic battery installation since the scheme began tracking them in September 2023. The trend is unmistakable: what started as a few hundred installs per month has grown into a market doing nearly 3,000.
Monthly domestic battery installations (UK)
Installed capacity
Raw install counts only tell half the story. Capacity matters because it reflects what homeowners are actually buying. Total installed capacity has grown even faster than install counts, suggesting people are choosing larger systems over time.
Monthly installed capacity (MWh)
Where are batteries being installed?
MCS data covers 402 local authorities across the UK. Battery adoption varies enormously by area – from nearly 1.7% of households in the Shetland Islands to virtually zero in parts of London and Northern Ireland. Use the tabs below to see the top areas by penetration rate or by total installs.
| # | Local authority | Installs | % of households |
|---|
Showing top 25. Penetration rate = MCS-certified battery installs as a percentage of households in each local authority. Source: MCS Data Dashboard.
What does it cost?
These figures come from the DESNZ dataset for financial year 2024/25. Costs are shown per kWh of battery capacity – that is, the total installed price divided by the size of the battery. They include the battery unit, installation labour, grid connection and VAT. They do not include solar panels or any other equipment installed alongside the battery. To get the total system cost, multiply the £/kWh figure by the battery size.
9,860 installs
Typical system: ~5 kWh
Total cost: ~£5,100
7,960 installs
Typical system: ~9.4 kWh
Total cost: ~£8,500
4,590 installs
Typical system: ~14.9 kWh
Total cost: ~£8,800
What this data covers – and what it doesn't
This tracker uses official statistics published by the Department for Energy Security and Net Zero (DESNZ), drawn from the Microgeneration Certification Scheme (MCS) database. A few things to bear in mind:
- MCS-certified only. These figures cover installations registered through the MCS scheme. Batteries installed outside the scheme (a small but unknown share of the market) are not included.
- Domestic retrofit only. New-build and commercial installations are excluded.
- Cost includes installation. The cost figures cover the battery, installation labour, grid connection and VAT – but not solar panels or other equipment installed at the same time.
- Aggregated, not real-time. DESNZ publishes annually (each May, covering the preceding financial year). Monthly install counts update with each release. This is not a live price index.
- Outliers removed. DESNZ excludes batteries under 1 kWh or over 30 kWh, and costs below £100/kWh or above £5,000/kWh.
Source: DESNZ, MCS Certified Domestic Battery Installation Statistics (May 2025). Published under the Open Government Licence v3.0. Visualisation by Habo.
Next DESNZ data release: 28 May 2026 (covering April 2025 – March 2026).
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